CHMP5 and infection: These results were further validated by flow-cytometry analysis using an antibody against SARS-2 N or spike (S) protein, showing that the iL–ungs co-cultured with iM2φs had lower infection rates of iLung cells by SARS-CoV-2, compared to the co-cultures with iM1φs, iM0φs, and 293 T cells (Fig. 3f).